diff options
Diffstat (limited to 'arch/arm/mach-omap2/cm3xxx.c')
| -rw-r--r-- | arch/arm/mach-omap2/cm3xxx.c | 681 |
1 files changed, 681 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/cm3xxx.c b/arch/arm/mach-omap2/cm3xxx.c new file mode 100644 index 000000000..ec580fd09 --- /dev/null +++ b/arch/arm/mach-omap2/cm3xxx.c @@ -0,0 +1,681 @@ +/* + * OMAP3xxx CM module functions + * + * Copyright (C) 2009 Nokia Corporation + * Copyright (C) 2008-2010, 2012 Texas Instruments, Inc. + * Paul Walmsley + * Rajendra Nayak <rnayak@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/err.h> +#include <linux/io.h> + +#include "prm2xxx_3xxx.h" +#include "cm.h" +#include "cm3xxx.h" +#include "cm-regbits-34xx.h" +#include "clockdomain.h" + +static const u8 omap3xxx_cm_idlest_offs[] = { + CM_IDLEST1, CM_IDLEST2, OMAP2430_CM_IDLEST3 +}; + +/* + * + */ + +static void _write_clktrctrl(u8 c, s16 module, u32 mask) +{ + u32 v; + + v = omap2_cm_read_mod_reg(module, OMAP2_CM_CLKSTCTRL); + v &= ~mask; + v |= c << __ffs(mask); + omap2_cm_write_mod_reg(v, module, OMAP2_CM_CLKSTCTRL); +} + +static bool omap3xxx_cm_is_clkdm_in_hwsup(s16 module, u32 mask) +{ + u32 v; + + v = omap2_cm_read_mod_reg(module, OMAP2_CM_CLKSTCTRL); + v &= mask; + v >>= __ffs(mask); + + return (v == OMAP34XX_CLKSTCTRL_ENABLE_AUTO) ? 1 : 0; +} + +static void omap3xxx_cm_clkdm_enable_hwsup(s16 module, u32 mask) +{ + _write_clktrctrl(OMAP34XX_CLKSTCTRL_ENABLE_AUTO, module, mask); +} + +static void omap3xxx_cm_clkdm_disable_hwsup(s16 module, u32 mask) +{ + _write_clktrctrl(OMAP34XX_CLKSTCTRL_DISABLE_AUTO, module, mask); +} + +static void omap3xxx_cm_clkdm_force_sleep(s16 module, u32 mask) +{ + _write_clktrctrl(OMAP34XX_CLKSTCTRL_FORCE_SLEEP, module, mask); +} + +static void omap3xxx_cm_clkdm_force_wakeup(s16 module, u32 mask) +{ + _write_clktrctrl(OMAP34XX_CLKSTCTRL_FORCE_WAKEUP, module, mask); +} + +/* + * + */ + +/** + * omap3xxx_cm_wait_module_ready - wait for a module to leave idle or standby + * @part: PRCM partition, ignored for OMAP3 + * @prcm_mod: PRCM module offset + * @idlest_id: CM_IDLESTx register ID (i.e., x = 1, 2, 3) + * @idlest_shift: shift of the bit in the CM_IDLEST* register to check + * + * Wait for the PRCM to indicate that the module identified by + * (@prcm_mod, @idlest_id, @idlest_shift) is clocked. Return 0 upon + * success or -EBUSY if the module doesn't enable in time. + */ +static int omap3xxx_cm_wait_module_ready(u8 part, s16 prcm_mod, u16 idlest_id, + u8 idlest_shift) +{ + int ena = 0, i = 0; + u8 cm_idlest_reg; + u32 mask; + + if (!idlest_id || (idlest_id > ARRAY_SIZE(omap3xxx_cm_idlest_offs))) + return -EINVAL; + + cm_idlest_reg = omap3xxx_cm_idlest_offs[idlest_id - 1]; + + mask = 1 << idlest_shift; + ena = 0; + + omap_test_timeout(((omap2_cm_read_mod_reg(prcm_mod, cm_idlest_reg) & + mask) == ena), MAX_MODULE_READY_TIME, i); + + return (i < MAX_MODULE_READY_TIME) ? 0 : -EBUSY; +} + +/** + * omap3xxx_cm_split_idlest_reg - split CM_IDLEST reg addr into its components + * @idlest_reg: CM_IDLEST* virtual address + * @prcm_inst: pointer to an s16 to return the PRCM instance offset + * @idlest_reg_id: pointer to a u8 to return the CM_IDLESTx register ID + * + * XXX This function is only needed until absolute register addresses are + * removed from the OMAP struct clk records. + */ +static int omap3xxx_cm_split_idlest_reg(struct clk_omap_reg *idlest_reg, + s16 *prcm_inst, + u8 *idlest_reg_id) +{ + unsigned long offs; + u8 idlest_offs; + int i; + + idlest_offs = idlest_reg->offset & 0xff; + for (i = 0; i < ARRAY_SIZE(omap3xxx_cm_idlest_offs); i++) { + if (idlest_offs == omap3xxx_cm_idlest_offs[i]) { + *idlest_reg_id = i + 1; + break; + } + } + + if (i == ARRAY_SIZE(omap3xxx_cm_idlest_offs)) + return -EINVAL; + + offs = idlest_reg->offset; + offs &= 0xff00; + *prcm_inst = offs; + + return 0; +} + +/* Clockdomain low-level operations */ + +static int omap3xxx_clkdm_add_sleepdep(struct clockdomain *clkdm1, + struct clockdomain *clkdm2) +{ + omap2_cm_set_mod_reg_bits((1 << clkdm2->dep_bit), + clkdm1->pwrdm.ptr->prcm_offs, + OMAP3430_CM_SLEEPDEP); + return 0; +} + +static int omap3xxx_clkdm_del_sleepdep(struct clockdomain *clkdm1, + struct clockdomain *clkdm2) +{ + omap2_cm_clear_mod_reg_bits((1 << clkdm2->dep_bit), + clkdm1->pwrdm.ptr->prcm_offs, + OMAP3430_CM_SLEEPDEP); + return 0; +} + +static int omap3xxx_clkdm_read_sleepdep(struct clockdomain *clkdm1, + struct clockdomain *clkdm2) +{ + return omap2_cm_read_mod_bits_shift(clkdm1->pwrdm.ptr->prcm_offs, + OMAP3430_CM_SLEEPDEP, + (1 << clkdm2->dep_bit)); +} + +static int omap3xxx_clkdm_clear_all_sleepdeps(struct clockdomain *clkdm) +{ + struct clkdm_dep *cd; + u32 mask = 0; + + for (cd = clkdm->sleepdep_srcs; cd && cd->clkdm_name; cd++) { + if (!cd->clkdm) + continue; /* only happens if data is erroneous */ + + mask |= 1 << cd->clkdm->dep_bit; + cd->sleepdep_usecount = 0; + } + omap2_cm_clear_mod_reg_bits(mask, clkdm->pwrdm.ptr->prcm_offs, + OMAP3430_CM_SLEEPDEP); + return 0; +} + +static int omap3xxx_clkdm_sleep(struct clockdomain *clkdm) +{ + omap3xxx_cm_clkdm_force_sleep(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + return 0; +} + +static int omap3xxx_clkdm_wakeup(struct clockdomain *clkdm) +{ + omap3xxx_cm_clkdm_force_wakeup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + return 0; +} + +static void omap3xxx_clkdm_allow_idle(struct clockdomain *clkdm) +{ + if (clkdm->usecount > 0) + clkdm_add_autodeps(clkdm); + + omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); +} + +static void omap3xxx_clkdm_deny_idle(struct clockdomain *clkdm) +{ + omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + + if (clkdm->usecount > 0) + clkdm_del_autodeps(clkdm); +} + +static int omap3xxx_clkdm_clk_enable(struct clockdomain *clkdm) +{ + bool hwsup = false; + + if (!clkdm->clktrctrl_mask) + return 0; + + /* + * The CLKDM_MISSING_IDLE_REPORTING flag documentation has + * more details on the unpleasant problem this is working + * around + */ + if ((clkdm->flags & CLKDM_MISSING_IDLE_REPORTING) && + (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)) { + omap3xxx_clkdm_wakeup(clkdm); + return 0; + } + + hwsup = omap3xxx_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + + if (hwsup) { + /* Disable HW transitions when we are changing deps */ + omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + clkdm_add_autodeps(clkdm); + omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + } else { + if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP) + omap3xxx_clkdm_wakeup(clkdm); + } + + return 0; +} + +static int omap3xxx_clkdm_clk_disable(struct clockdomain *clkdm) +{ + bool hwsup = false; + + if (!clkdm->clktrctrl_mask) + return 0; + + /* + * The CLKDM_MISSING_IDLE_REPORTING flag documentation has + * more details on the unpleasant problem this is working + * around + */ + if (clkdm->flags & CLKDM_MISSING_IDLE_REPORTING && + !(clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) { + omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + return 0; + } + + hwsup = omap3xxx_cm_is_clkdm_in_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + + if (hwsup) { + /* Disable HW transitions when we are changing deps */ + omap3xxx_cm_clkdm_disable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + clkdm_del_autodeps(clkdm); + omap3xxx_cm_clkdm_enable_hwsup(clkdm->pwrdm.ptr->prcm_offs, + clkdm->clktrctrl_mask); + } else { + if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP) + omap3xxx_clkdm_sleep(clkdm); + } + + return 0; +} + +struct clkdm_ops omap3_clkdm_operations = { + .clkdm_add_wkdep = omap2_clkdm_add_wkdep, + .clkdm_del_wkdep = omap2_clkdm_del_wkdep, + .clkdm_read_wkdep = omap2_clkdm_read_wkdep, + .clkdm_clear_all_wkdeps = omap2_clkdm_clear_all_wkdeps, + .clkdm_add_sleepdep = omap3xxx_clkdm_add_sleepdep, + .clkdm_del_sleepdep = omap3xxx_clkdm_del_sleepdep, + .clkdm_read_sleepdep = omap3xxx_clkdm_read_sleepdep, + .clkdm_clear_all_sleepdeps = omap3xxx_clkdm_clear_all_sleepdeps, + .clkdm_sleep = omap3xxx_clkdm_sleep, + .clkdm_wakeup = omap3xxx_clkdm_wakeup, + .clkdm_allow_idle = omap3xxx_clkdm_allow_idle, + .clkdm_deny_idle = omap3xxx_clkdm_deny_idle, + .clkdm_clk_enable = omap3xxx_clkdm_clk_enable, + .clkdm_clk_disable = omap3xxx_clkdm_clk_disable, +}; + +/* + * Context save/restore code - OMAP3 only + */ +struct omap3_cm_regs { + u32 iva2_cm_clksel1; + u32 iva2_cm_clksel2; + u32 cm_sysconfig; + u32 sgx_cm_clksel; + u32 dss_cm_clksel; + u32 cam_cm_clksel; + u32 per_cm_clksel; + u32 emu_cm_clksel; + u32 emu_cm_clkstctrl; + u32 pll_cm_autoidle; + u32 pll_cm_autoidle2; + u32 pll_cm_clksel4; + u32 pll_cm_clksel5; + u32 pll_cm_clken2; + u32 cm_polctrl; + u32 iva2_cm_fclken; + u32 iva2_cm_clken_pll; + u32 core_cm_fclken1; + u32 core_cm_fclken3; + u32 sgx_cm_fclken; + u32 wkup_cm_fclken; + u32 dss_cm_fclken; + u32 cam_cm_fclken; + u32 per_cm_fclken; + u32 usbhost_cm_fclken; + u32 core_cm_iclken1; + u32 core_cm_iclken2; + u32 core_cm_iclken3; + u32 sgx_cm_iclken; + u32 wkup_cm_iclken; + u32 dss_cm_iclken; + u32 cam_cm_iclken; + u32 per_cm_iclken; + u32 usbhost_cm_iclken; + u32 iva2_cm_autoidle2; + u32 mpu_cm_autoidle2; + u32 iva2_cm_clkstctrl; + u32 mpu_cm_clkstctrl; + u32 core_cm_clkstctrl; + u32 sgx_cm_clkstctrl; + u32 dss_cm_clkstctrl; + u32 cam_cm_clkstctrl; + u32 per_cm_clkstctrl; + u32 neon_cm_clkstctrl; + u32 usbhost_cm_clkstctrl; + u32 core_cm_autoidle1; + u32 core_cm_autoidle2; + u32 core_cm_autoidle3; + u32 wkup_cm_autoidle; + u32 dss_cm_autoidle; + u32 cam_cm_autoidle; + u32 per_cm_autoidle; + u32 usbhost_cm_autoidle; + u32 sgx_cm_sleepdep; + u32 dss_cm_sleepdep; + u32 cam_cm_sleepdep; + u32 per_cm_sleepdep; + u32 usbhost_cm_sleepdep; + u32 cm_clkout_ctrl; +}; + +static struct omap3_cm_regs cm_context; + +void omap3_cm_save_context(void) +{ + cm_context.iva2_cm_clksel1 = + omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_CLKSEL1); + cm_context.iva2_cm_clksel2 = + omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_CLKSEL2); + cm_context.cm_sysconfig = + omap2_cm_read_mod_reg(OCP_MOD, OMAP3430_CM_SYSCONFIG); + cm_context.sgx_cm_clksel = + omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, CM_CLKSEL); + cm_context.dss_cm_clksel = + omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_CLKSEL); + cm_context.cam_cm_clksel = + omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_CLKSEL); + cm_context.per_cm_clksel = + omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_CLKSEL); + cm_context.emu_cm_clksel = + omap2_cm_read_mod_reg(OMAP3430_EMU_MOD, CM_CLKSEL1); + cm_context.emu_cm_clkstctrl = + omap2_cm_read_mod_reg(OMAP3430_EMU_MOD, OMAP2_CM_CLKSTCTRL); + /* + * As per erratum i671, ROM code does not respect the PER DPLL + * programming scheme if CM_AUTOIDLE_PLL.AUTO_PERIPH_DPLL == 1. + * In this case, even though this register has been saved in + * scratchpad contents, we need to restore AUTO_PERIPH_DPLL + * by ourselves. So, we need to save it anyway. + */ + cm_context.pll_cm_autoidle = + omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE); + cm_context.pll_cm_autoidle2 = + omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE2); + cm_context.pll_cm_clksel4 = + omap2_cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKSEL4); + cm_context.pll_cm_clksel5 = + omap2_cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKSEL5); + cm_context.pll_cm_clken2 = + omap2_cm_read_mod_reg(PLL_MOD, OMAP3430ES2_CM_CLKEN2); + cm_context.cm_polctrl = + omap2_cm_read_mod_reg(OCP_MOD, OMAP3430_CM_POLCTRL); + cm_context.iva2_cm_fclken = + omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_FCLKEN); + cm_context.iva2_cm_clken_pll = + omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKEN_PLL); + cm_context.core_cm_fclken1 = + omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1); + cm_context.core_cm_fclken3 = + omap2_cm_read_mod_reg(CORE_MOD, OMAP3430ES2_CM_FCLKEN3); + cm_context.sgx_cm_fclken = + omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, CM_FCLKEN); + cm_context.wkup_cm_fclken = + omap2_cm_read_mod_reg(WKUP_MOD, CM_FCLKEN); + cm_context.dss_cm_fclken = + omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_FCLKEN); + cm_context.cam_cm_fclken = + omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_FCLKEN); + cm_context.per_cm_fclken = + omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_FCLKEN); + cm_context.usbhost_cm_fclken = + omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, CM_FCLKEN); + cm_context.core_cm_iclken1 = + omap2_cm_read_mod_reg(CORE_MOD, CM_ICLKEN1); + cm_context.core_cm_iclken2 = + omap2_cm_read_mod_reg(CORE_MOD, CM_ICLKEN2); + cm_context.core_cm_iclken3 = + omap2_cm_read_mod_reg(CORE_MOD, CM_ICLKEN3); + cm_context.sgx_cm_iclken = + omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, CM_ICLKEN); + cm_context.wkup_cm_iclken = + omap2_cm_read_mod_reg(WKUP_MOD, CM_ICLKEN); + cm_context.dss_cm_iclken = + omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_ICLKEN); + cm_context.cam_cm_iclken = + omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_ICLKEN); + cm_context.per_cm_iclken = + omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_ICLKEN); + cm_context.usbhost_cm_iclken = + omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, CM_ICLKEN); + cm_context.iva2_cm_autoidle2 = + omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, CM_AUTOIDLE2); + cm_context.mpu_cm_autoidle2 = + omap2_cm_read_mod_reg(MPU_MOD, CM_AUTOIDLE2); + cm_context.iva2_cm_clkstctrl = + omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP2_CM_CLKSTCTRL); + cm_context.mpu_cm_clkstctrl = + omap2_cm_read_mod_reg(MPU_MOD, OMAP2_CM_CLKSTCTRL); + cm_context.core_cm_clkstctrl = + omap2_cm_read_mod_reg(CORE_MOD, OMAP2_CM_CLKSTCTRL); + cm_context.sgx_cm_clkstctrl = + omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, OMAP2_CM_CLKSTCTRL); + cm_context.dss_cm_clkstctrl = + omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, OMAP2_CM_CLKSTCTRL); + cm_context.cam_cm_clkstctrl = + omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, OMAP2_CM_CLKSTCTRL); + cm_context.per_cm_clkstctrl = + omap2_cm_read_mod_reg(OMAP3430_PER_MOD, OMAP2_CM_CLKSTCTRL); + cm_context.neon_cm_clkstctrl = + omap2_cm_read_mod_reg(OMAP3430_NEON_MOD, OMAP2_CM_CLKSTCTRL); + cm_context.usbhost_cm_clkstctrl = + omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, + OMAP2_CM_CLKSTCTRL); + cm_context.core_cm_autoidle1 = + omap2_cm_read_mod_reg(CORE_MOD, CM_AUTOIDLE1); + cm_context.core_cm_autoidle2 = + omap2_cm_read_mod_reg(CORE_MOD, CM_AUTOIDLE2); + cm_context.core_cm_autoidle3 = + omap2_cm_read_mod_reg(CORE_MOD, CM_AUTOIDLE3); + cm_context.wkup_cm_autoidle = + omap2_cm_read_mod_reg(WKUP_MOD, CM_AUTOIDLE); + cm_context.dss_cm_autoidle = + omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, CM_AUTOIDLE); + cm_context.cam_cm_autoidle = + omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, CM_AUTOIDLE); + cm_context.per_cm_autoidle = + omap2_cm_read_mod_reg(OMAP3430_PER_MOD, CM_AUTOIDLE); + cm_context.usbhost_cm_autoidle = + omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, CM_AUTOIDLE); + cm_context.sgx_cm_sleepdep = + omap2_cm_read_mod_reg(OMAP3430ES2_SGX_MOD, + OMAP3430_CM_SLEEPDEP); + cm_context.dss_cm_sleepdep = + omap2_cm_read_mod_reg(OMAP3430_DSS_MOD, OMAP3430_CM_SLEEPDEP); + cm_context.cam_cm_sleepdep = + omap2_cm_read_mod_reg(OMAP3430_CAM_MOD, OMAP3430_CM_SLEEPDEP); + cm_context.per_cm_sleepdep = + omap2_cm_read_mod_reg(OMAP3430_PER_MOD, OMAP3430_CM_SLEEPDEP); + cm_context.usbhost_cm_sleepdep = + omap2_cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, + OMAP3430_CM_SLEEPDEP); + cm_context.cm_clkout_ctrl = + omap2_cm_read_mod_reg(OMAP3430_CCR_MOD, + OMAP3_CM_CLKOUT_CTRL_OFFSET); +} + +void omap3_cm_restore_context(void) +{ + omap2_cm_write_mod_reg(cm_context.iva2_cm_clksel1, OMAP3430_IVA2_MOD, + CM_CLKSEL1); + omap2_cm_write_mod_reg(cm_context.iva2_cm_clksel2, OMAP3430_IVA2_MOD, + CM_CLKSEL2); + omap2_cm_write_mod_reg(cm_context.cm_sysconfig, OCP_MOD, + OMAP3430_CM_SYSCONFIG); + omap2_cm_write_mod_reg(cm_context.sgx_cm_clksel, OMAP3430ES2_SGX_MOD, + CM_CLKSEL); + omap2_cm_write_mod_reg(cm_context.dss_cm_clksel, OMAP3430_DSS_MOD, + CM_CLKSEL); + omap2_cm_write_mod_reg(cm_context.cam_cm_clksel, OMAP3430_CAM_MOD, + CM_CLKSEL); + omap2_cm_write_mod_reg(cm_context.per_cm_clksel, OMAP3430_PER_MOD, + CM_CLKSEL); + omap2_cm_write_mod_reg(cm_context.emu_cm_clksel, OMAP3430_EMU_MOD, + CM_CLKSEL1); + omap2_cm_write_mod_reg(cm_context.emu_cm_clkstctrl, OMAP3430_EMU_MOD, + OMAP2_CM_CLKSTCTRL); + /* + * As per erratum i671, ROM code does not respect the PER DPLL + * programming scheme if CM_AUTOIDLE_PLL.AUTO_PERIPH_DPLL == 1. + * In this case, we need to restore AUTO_PERIPH_DPLL by ourselves. + */ + omap2_cm_write_mod_reg(cm_context.pll_cm_autoidle, PLL_MOD, + CM_AUTOIDLE); + omap2_cm_write_mod_reg(cm_context.pll_cm_autoidle2, PLL_MOD, + CM_AUTOIDLE2); + omap2_cm_write_mod_reg(cm_context.pll_cm_clksel4, PLL_MOD, + OMAP3430ES2_CM_CLKSEL4); + omap2_cm_write_mod_reg(cm_context.pll_cm_clksel5, PLL_MOD, + OMAP3430ES2_CM_CLKSEL5); + omap2_cm_write_mod_reg(cm_context.pll_cm_clken2, PLL_MOD, + OMAP3430ES2_CM_CLKEN2); + omap2_cm_write_mod_reg(cm_context.cm_polctrl, OCP_MOD, + OMAP3430_CM_POLCTRL); + omap2_cm_write_mod_reg(cm_context.iva2_cm_fclken, OMAP3430_IVA2_MOD, + CM_FCLKEN); + omap2_cm_write_mod_reg(cm_context.iva2_cm_clken_pll, OMAP3430_IVA2_MOD, + OMAP3430_CM_CLKEN_PLL); + omap2_cm_write_mod_reg(cm_context.core_cm_fclken1, CORE_MOD, + CM_FCLKEN1); + omap2_cm_write_mod_reg(cm_context.core_cm_fclken3, CORE_MOD, + OMAP3430ES2_CM_FCLKEN3); + omap2_cm_write_mod_reg(cm_context.sgx_cm_fclken, OMAP3430ES2_SGX_MOD, + CM_FCLKEN); + omap2_cm_write_mod_reg(cm_context.wkup_cm_fclken, WKUP_MOD, CM_FCLKEN); + omap2_cm_write_mod_reg(cm_context.dss_cm_fclken, OMAP3430_DSS_MOD, + CM_FCLKEN); + omap2_cm_write_mod_reg(cm_context.cam_cm_fclken, OMAP3430_CAM_MOD, + CM_FCLKEN); + omap2_cm_write_mod_reg(cm_context.per_cm_fclken, OMAP3430_PER_MOD, + CM_FCLKEN); + omap2_cm_write_mod_reg(cm_context.usbhost_cm_fclken, + OMAP3430ES2_USBHOST_MOD, CM_FCLKEN); + omap2_cm_write_mod_reg(cm_context.core_cm_iclken1, CORE_MOD, + CM_ICLKEN1); + omap2_cm_write_mod_reg(cm_context.core_cm_iclken2, CORE_MOD, + CM_ICLKEN2); + omap2_cm_write_mod_reg(cm_context.core_cm_iclken3, CORE_MOD, + CM_ICLKEN3); + omap2_cm_write_mod_reg(cm_context.sgx_cm_iclken, OMAP3430ES2_SGX_MOD, + CM_ICLKEN); + omap2_cm_write_mod_reg(cm_context.wkup_cm_iclken, WKUP_MOD, CM_ICLKEN); + omap2_cm_write_mod_reg(cm_context.dss_cm_iclken, OMAP3430_DSS_MOD, + CM_ICLKEN); + omap2_cm_write_mod_reg(cm_context.cam_cm_iclken, OMAP3430_CAM_MOD, + CM_ICLKEN); + omap2_cm_write_mod_reg(cm_context.per_cm_iclken, OMAP3430_PER_MOD, + CM_ICLKEN); + omap2_cm_write_mod_reg(cm_context.usbhost_cm_iclken, + OMAP3430ES2_USBHOST_MOD, CM_ICLKEN); + omap2_cm_write_mod_reg(cm_context.iva2_cm_autoidle2, OMAP3430_IVA2_MOD, + CM_AUTOIDLE2); + omap2_cm_write_mod_reg(cm_context.mpu_cm_autoidle2, MPU_MOD, + CM_AUTOIDLE2); + omap2_cm_write_mod_reg(cm_context.iva2_cm_clkstctrl, OMAP3430_IVA2_MOD, + OMAP2_CM_CLKSTCTRL); + omap2_cm_write_mod_reg(cm_context.mpu_cm_clkstctrl, MPU_MOD, + OMAP2_CM_CLKSTCTRL); + omap2_cm_write_mod_reg(cm_context.core_cm_clkstctrl, CORE_MOD, + OMAP2_CM_CLKSTCTRL); + omap2_cm_write_mod_reg(cm_context.sgx_cm_clkstctrl, OMAP3430ES2_SGX_MOD, + OMAP2_CM_CLKSTCTRL); + omap2_cm_write_mod_reg(cm_context.dss_cm_clkstctrl, OMAP3430_DSS_MOD, + OMAP2_CM_CLKSTCTRL); + omap2_cm_write_mod_reg(cm_context.cam_cm_clkstctrl, OMAP3430_CAM_MOD, + OMAP2_CM_CLKSTCTRL); + omap2_cm_write_mod_reg(cm_context.per_cm_clkstctrl, OMAP3430_PER_MOD, + OMAP2_CM_CLKSTCTRL); + omap2_cm_write_mod_reg(cm_context.neon_cm_clkstctrl, OMAP3430_NEON_MOD, + OMAP2_CM_CLKSTCTRL); + omap2_cm_write_mod_reg(cm_context.usbhost_cm_clkstctrl, + OMAP3430ES2_USBHOST_MOD, OMAP2_CM_CLKSTCTRL); + omap2_cm_write_mod_reg(cm_context.core_cm_autoidle1, CORE_MOD, + CM_AUTOIDLE1); + omap2_cm_write_mod_reg(cm_context.core_cm_autoidle2, CORE_MOD, + CM_AUTOIDLE2); + omap2_cm_write_mod_reg(cm_context.core_cm_autoidle3, CORE_MOD, + CM_AUTOIDLE3); + omap2_cm_write_mod_reg(cm_context.wkup_cm_autoidle, WKUP_MOD, + CM_AUTOIDLE); + omap2_cm_write_mod_reg(cm_context.dss_cm_autoidle, OMAP3430_DSS_MOD, + CM_AUTOIDLE); + omap2_cm_write_mod_reg(cm_context.cam_cm_autoidle, OMAP3430_CAM_MOD, + CM_AUTOIDLE); + omap2_cm_write_mod_reg(cm_context.per_cm_autoidle, OMAP3430_PER_MOD, + CM_AUTOIDLE); + omap2_cm_write_mod_reg(cm_context.usbhost_cm_autoidle, + OMAP3430ES2_USBHOST_MOD, CM_AUTOIDLE); + omap2_cm_write_mod_reg(cm_context.sgx_cm_sleepdep, OMAP3430ES2_SGX_MOD, + OMAP3430_CM_SLEEPDEP); + omap2_cm_write_mod_reg(cm_context.dss_cm_sleepdep, OMAP3430_DSS_MOD, + OMAP3430_CM_SLEEPDEP); + omap2_cm_write_mod_reg(cm_context.cam_cm_sleepdep, OMAP3430_CAM_MOD, + OMAP3430_CM_SLEEPDEP); + omap2_cm_write_mod_reg(cm_context.per_cm_sleepdep, OMAP3430_PER_MOD, + OMAP3430_CM_SLEEPDEP); + omap2_cm_write_mod_reg(cm_context.usbhost_cm_sleepdep, + OMAP3430ES2_USBHOST_MOD, OMAP3430_CM_SLEEPDEP); + omap2_cm_write_mod_reg(cm_context.cm_clkout_ctrl, OMAP3430_CCR_MOD, + OMAP3_CM_CLKOUT_CTRL_OFFSET); +} + +void omap3_cm_save_scratchpad_contents(u32 *ptr) +{ + *ptr++ = omap2_cm_read_mod_reg(CORE_MOD, CM_CLKSEL); + *ptr++ = omap2_cm_read_mod_reg(WKUP_MOD, CM_CLKSEL); + *ptr++ = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN); + + /* + * As per erratum i671, ROM code does not respect the PER DPLL + * programming scheme if CM_AUTOIDLE_PLL..AUTO_PERIPH_DPLL == 1. + * Then, in any case, clear these bits to avoid extra latencies. + */ + *ptr++ = omap2_cm_read_mod_reg(PLL_MOD, CM_AUTOIDLE) & + ~OMAP3430_AUTO_PERIPH_DPLL_MASK; + *ptr++ = omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL1_PLL); + *ptr++ = omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL2_PLL); + *ptr++ = omap2_cm_read_mod_reg(PLL_MOD, OMAP3430_CM_CLKSEL3); + *ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKEN_PLL); + *ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_AUTOIDLE_PLL); + *ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL1_PLL); + *ptr++ = omap2_cm_read_mod_reg(MPU_MOD, OMAP3430_CM_CLKSEL2_PLL); +} + +/* + * + */ + +static const struct cm_ll_data omap3xxx_cm_ll_data = { + .split_idlest_reg = &omap3xxx_cm_split_idlest_reg, + .wait_module_ready = &omap3xxx_cm_wait_module_ready, +}; + +int __init omap3xxx_cm_init(const struct omap_prcm_init_data *data) +{ + omap2_clk_legacy_provider_init(TI_CLKM_CM, cm_base.va + + OMAP3430_IVA2_MOD); + return cm_register(&omap3xxx_cm_ll_data); +} + +static void __exit omap3xxx_cm_exit(void) +{ + cm_unregister(&omap3xxx_cm_ll_data); +} +__exitcall(omap3xxx_cm_exit); |